end of mandatory functions

2025-11-08 17:57:58 +01:00
parent 25a804847b
commit b603db3539
13 changed files with 486 additions and 2 deletions
--- a/ft_itoa.c
+++ b/ft_itoa.c
@@ -0,0 +1,75 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_itoa.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dgaillet <dgaillet@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/11/07 13:06:35 by dgaillet          #+#    #+#             */
+/*   Updated: 2025/11/07 13:52:20 by dgaillet         ###   ########lyon.fr   */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+size_t	malloc_size(int n)
+{
+	size_t	size;
+
+	size = 0;
+	if (n <= 0)
+		size++;
+	while (n)
+	{
+		n /= 10;
+		size++;
+	}
+	return (size);
+}
+
+void	insert_char(char *str, unsigned int nbr, int index)
+{
+	if (!index)
+		return ;
+	str[index] = (nbr % 10) + '0';
+	insert_char(str, nbr / 10, index - 1);
+}
+
+char	*ft_itoa(int n)
+{
+	unsigned int	nbr;
+	char			*str;
+
+	nbr = n;
+	if (n < 0)
+		nbr = n * -1;
+	str = malloc(sizeof(char) * (malloc_size(n) + 1));
+	if (!str)
+		return (NULL);
+	if (nbr == 0)
+		str[0] = '0';
+	else
+	{
+		if (n < 0)
+		{
+			str[0] = '-';
+		}
+		insert_char(str, nbr, malloc_size(n) - 1);
+	}
+	str[malloc_size(n)] = '\0';
+	return (str);
+}
+
+#include "stdio.h"
+
+int	main(int argc, char **argv)
+{
+	char	*str;
+
+	if (argc > 1)
+	{
+		str = ft_itoa(atoi(argv[1]));
+		printf("%s\n", str);
+		free(str);
+	}
+}